Randomized Controlled Trial
Liberal versus restrictive blood transfusion strategy: 3-year survival and cause of death results from the FOCUS randomised controlled trial.
Lancet. 2015 Mar 28;385(9974):1183-9.
Randomized Controlled Trial
Efficacy and safety of prophylactic large dose of tranexamic acid in spine surgery: a prospective, randomized, double-blind, placebo-controlled study.
Spine. 2008 Nov 15;33(24):2577-80.
Comparative Study
The relationship between admission hemoglobin level and outcome after hip fracture.
J Orthop Trauma. 2002 Jan 1; 16 (1): 39-44.